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OpenFOAM-dev / data /applications /modules /twoPhaseSolver /pressureCorrector.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2023-2026 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/

#include "twoPhaseSolver.H"
#include "constrainHbyA.H"
#include "constrainPressure.H"
#include "adjustPhi.H"
#include "findRefCell.H"
#include "fvcMeshPhi.H"
#include "fvcFlux.H"
#include "fvcDdt.H"
#include "fviDiv.H"
#include "fvcSnGrad.H"
#include "fvcReconstruct.H"
#include "fvmLaplacian.H"

// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //

void Foam::solvers::twoPhaseSolver::incompressiblePressureCorrector
(
    volScalarField& p
)
{
    volScalarField& p_rgh = p_rgh_;
    volVectorField& U = U_;
    surfaceScalarField& phi(phi_);

    fvVectorMatrix& UEqn = tUEqn.ref();
    setrAU(UEqn);

    const surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU()));

    while (pimple.correct())
    {
        volVectorField HbyA(constrainHbyA(rAU()*UEqn.H(), U, p_rgh));
        surfaceScalarField phiHbyA
        (
            "phiHbyA",
            fvc::flux(HbyA)
          + fvc::interpolate(rho*rAU())*fvc::ddtCorr(U, phi, Uf)
        );

        MRF.makeRelative(phiHbyA);

        if (p_rgh.needReference())
        {
            fvc::makeRelative(phiHbyA, U);
            adjustPhi(phiHbyA, U, p_rgh);
            fvc::makeAbsolute(phiHbyA, U);
        }

        surfaceScalarField phig
        (
            (
                surfaceTensionForce()
              - buoyancy.ghf*fvc::snGrad(rho)
            )*rAUf*mesh.magSf()
        );

        phiHbyA += phig;

        // Update the pressure BCs to ensure flux consistency
        constrainPressure(p_rgh, U, phiHbyA, rAUf, MRF);

        // Cache any sources
        fvScalarMatrix p_rghEqnSource
        (
            fvModels().sourceProxy(alpha1, p_rgh)
          + fvModels().sourceProxy(alpha2, p_rgh)
        );

        while (pimple.correctNonOrthogonal())
        {
            fvScalarMatrix p_rghEqn
            (
                fvi::div(phiHbyA) - fvm::laplacian(rAUf, p_rgh)
             == p_rghEqnSource
            );

            p_rghEqn.setReference
            (
                pressureReference().refCell(),
                getRefCellValue(p_rgh, pressureReference().refCell())
            );

            p_rghEqn.solve();

            if (pimple.finalNonOrthogonalIter())
            {
                phi = phiHbyA + p_rghEqn.flux();

                p_rgh.relax();

                U = HbyA
                  + rAU()*fvc::reconstruct((phig + p_rghEqn.flux())/rAUf);
                U.correctBoundaryConditions();
                fvConstraints().constrain(U);
            }
        }

        continuityErrors();

        // Correct Uf if the mesh is moving
        fvc::correctUf(Uf, U, phi, MRF);

        // Make the fluxes relative to the mesh motion
        fvc::makeRelative(phi, U);

        p == p_rgh + rho*buoyancy.gh;

        if (p_rgh.needReference())
        {
            p += dimensionedScalar
            (
                "p",
                p.dimensions(),
                pressureReference().refValue()
              - getRefCellValue(p, pressureReference().refCell())
            );
            p_rgh = p - rho*buoyancy.gh;
        }
    }

    clearrAU();
    tUEqn.clear();
}


// ************************************************************************* //

	/---------------------------------------------------------------------------\
	========= \|
	\\ / F ield \| OpenFOAM: The Open Source CFD Toolbox
	\\ / O peration \| Website: https://openfoam.org
	\\ / A nd \| Copyright (C) 2023-2026 OpenFOAM Foundation
	\\/ M anipulation \|
	-------------------------------------------------------------------------------
	License
	This file is part of OpenFOAM.

	OpenFOAM is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	for more details.

	You should have received a copy of the GNU General Public License
	along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.

	\---------------------------------------------------------------------------/

	#include "twoPhaseSolver.H"
	#include "constrainHbyA.H"
	#include "constrainPressure.H"
	#include "adjustPhi.H"
	#include "findRefCell.H"
	#include "fvcMeshPhi.H"
	#include "fvcFlux.H"
	#include "fvcDdt.H"
	#include "fviDiv.H"
	#include "fvcSnGrad.H"
	#include "fvcReconstruct.H"
	#include "fvmLaplacian.H"

	// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //

	void Foam::solvers::twoPhaseSolver::incompressiblePressureCorrector
	(
	volScalarField& p
	)
	{
	volScalarField& p_rgh = p_rgh_;
	volVectorField& U = U_;
	surfaceScalarField& phi(phi_);

	fvVectorMatrix& UEqn = tUEqn.ref();
	setrAU(UEqn);

	const surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU()));

	while (pimple.correct())
	{
	volVectorField HbyA(constrainHbyA(rAU()*UEqn.H(), U, p_rgh));
	surfaceScalarField phiHbyA
	(
	"phiHbyA",
	fvc::flux(HbyA)
	+ fvc::interpolate(rhorAU())fvc::ddtCorr(U, phi, Uf)
	);

	MRF.makeRelative(phiHbyA);

	if (p_rgh.needReference())
	{
	fvc::makeRelative(phiHbyA, U);
	adjustPhi(phiHbyA, U, p_rgh);
	fvc::makeAbsolute(phiHbyA, U);
	}

	surfaceScalarField phig
	(
	(
	surfaceTensionForce()
	- buoyancy.ghf*fvc::snGrad(rho)
	)rAUfmesh.magSf()
	);

	phiHbyA += phig;

	// Update the pressure BCs to ensure flux consistency
	constrainPressure(p_rgh, U, phiHbyA, rAUf, MRF);

	// Cache any sources
	fvScalarMatrix p_rghEqnSource
	(
	fvModels().sourceProxy(alpha1, p_rgh)
	+ fvModels().sourceProxy(alpha2, p_rgh)
	);

	while (pimple.correctNonOrthogonal())
	{
	fvScalarMatrix p_rghEqn
	(
	fvi::div(phiHbyA) - fvm::laplacian(rAUf, p_rgh)
	== p_rghEqnSource
	);

	p_rghEqn.setReference
	(
	pressureReference().refCell(),
	getRefCellValue(p_rgh, pressureReference().refCell())
	);

	p_rghEqn.solve();

	if (pimple.finalNonOrthogonalIter())
	{
	phi = phiHbyA + p_rghEqn.flux();

	p_rgh.relax();

	U = HbyA
	+ rAU()*fvc::reconstruct((phig + p_rghEqn.flux())/rAUf);
	U.correctBoundaryConditions();
	fvConstraints().constrain(U);
	}
	}

	continuityErrors();

	// Correct Uf if the mesh is moving
	fvc::correctUf(Uf, U, phi, MRF);

	// Make the fluxes relative to the mesh motion
	fvc::makeRelative(phi, U);

	p == p_rgh + rho*buoyancy.gh;

	if (p_rgh.needReference())
	{
	p += dimensionedScalar
	(
	"p",
	p.dimensions(),
	pressureReference().refValue()
	- getRefCellValue(p, pressureReference().refCell())
	);
	p_rgh = p - rho*buoyancy.gh;
	}
	}

	clearrAU();
	tUEqn.clear();
	}


	// ************************************************************************* //